Introduction: Currently, there is great interest in phytochemicals as bioactive components. The
roles of fruits, vegetables, and red pigments in preventing diseases have been partially attributed
to the antioxidant features of their constituent polyphenols, flavonoids, anthocyanins, and so on.
Methods: Biochemistry parameters including the relative levels of antioxidant activity, total
phenolic content, total flavonoid, total anthocyanin, and soluble and insoluble sugar contents of
Ribes khorasanicum were measured.
Results: The total phenolic and flavonoid content of the fruits were calculated as 33.6 mg/g dry
weight and 23.36 mg/g dry weight, respectively. Anthocyanin was measured as 62.9 mg/g dry
weight, indicting anthocyanin as the predominant antioxidant component in this plant. The
content of soluble sugar was 5.65 mg/g dry weight, while the amount of insoluble sugar was
4.60 mg/g dry weight. The 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity
was observed to be 6.42 mg/g dry weight.
Conclusion: Anthocyanin was the predominant antioxidant component in the investigated plant.
This particular plant has the potential to serve as an important source of anthocyanin which is
useful in medicinal and food industries.